Cash register



April 3, 1928. 1,664,956

E. J. VON PEIN CASH REGISTER Filed April 24, 1922 3W B Edward J. Von Pein p a 6 I M Patented Apr. 3, 1928.

UNITED STATES PATENT orrlca.

EDWARD J. VON PEIN, OI DAYTON, OHIO, ASSIGNOR, BY MESNEASSIGNIEQ'TS, TO m NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO, A COREOBATION O1 MARYLAND.

CASH REGISTER.

Application filed April 24, 1922. Serial 110. 556,304..

This invention relates to improvements in accounting machines and has more particular relation to the type of machine shown and described in Letters Patent of the United States issued to Thomas Carney, May 23, 1893, and October 1, 1901, and. numbered 497,860 and 683,877 respectively.

It is an object of this invention to rovide mechanism for preventing misad 'ng on the totalizer when an item key is operated by a quick and hard depression.

With this and incidental objects. in view, the invention consists in certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims, and preferred forms of embodiment of which are hereinafter described with reference to the draw.- ings which accompany and form part of the specification.

Of said drawings:

Fig. 1 is a transverse sectional view of the machine showing the improvement.

Fig. 2 is a detail view of the improvement shown in modified form.

Fig. 3 is a detail elevational View of the driving connection bet-ween the key coupler and the revolution shaft.

In its general operation and construction, the machine shown in the present application is substantially like that shown. in the Carney patents previously referred to.

This machine comprises a series of manipulative devices, such as keys, which operate mechanism for indicating items, entering the items in one ormore totalizers, setting up type, and operating a printing mechanism to make a printed record of items.

Item keys 15 (Fig. 1) are pivoted upon a transverse rod 16, and when the forward ends of one or more of them are depressed they engage and rock a key coupler 17 having two lateral projections 18 placed on oposite ends and journaled in side frames 19.

ivotally attached to the rear end of each item key 15 is an upright member 20, each formed with a notch 21, adapted, when a key 15 is operated, to engage a transverse rod 22 on a frame 23, pivoted on a transverse rod 24, to rock said frame different distances according to the value of the operated key.

' The notches 21 are located at varying disin the upright member 30', which is provided withv a bifurcated end guided on a stud 34 and with two opposing adapted. alternateiy to mesh with a pinion 35 fastened on the shaft 31. A spring 36 holds the right hand rack in engagement with pinion 35 which relation of rack and pinion is maintained during the upward movement of the member 30 by means of a flange 37 on said member and a cooperating member 38 projecting from the frame of the machine. At the end of its upward movement the member 30 is forced to the right by a spring actuated arm 39 and the left hand rack moved into engagement with. the Pinion, the flanges 37 and 38 cooperating to maintain this relation during the downward movement of said member 30. A ratchet wheel 40 on the shaft 31 and a pawl 41 pivoted on the frame prevent retrograde motion of the shaft 31 after a key 15 has been depressed a predetermined amount.

A cam 42 carried by the shaft 31 (Fig. 1) cooperates with rolls 43 on a bifurcated arm 44 secured to a totalizer frame 45 to rock the pinions 46 of the rotatable elements of the totalizer into engagement with the registering segments 25. The pinion 46 together with a ratchet 47 and a trip cam 48 are fastened to a numeral Wheel 49 which is freely mounted upon a shaft 50 journaled in the totalizer frame. A spring actuated retaining pawl 51 cooperates with the ratchet to prevent a retrograde movement of the rotatable elements. As these rotatable elements rotate in a clockwise direction, the trip cam 48 in moving from the nine to the zero position will engage the tripping nose on a pivoted sprin pressed trip pawl 52 and force said pawl1ack against the tension of the spring to cause the shoulder 53 formed on the upper end oi said pawl to disengage from a lug 54 extending laterally from a pivoted spring pressed carrying pawl F 5, allowing the forward end of said pawl to lower to a position to engage a tooth or the ratchet l? and rotate the .totalizer rotatable elements of higher order one divisionot movement. The carrying pawl 55 is mount ed on a pivoted lever 56 which carr es a roller 57 cooperating with a cam 58 t ened to the revolution shaft 31. All of this is well known in the art and is shown here for ill'iiistrative purposes only.

The registering segment 25- in addition to engaging with the totalizer pinion, i'uesl'ies with a pinion 59. This pinion is fastened to the left hand end of a shatt 60 which e2:- tends to the right beyond the frame oi the machine proper and on the right hand end carries a printing wheel (not shown) for printing the detailtransactions on a strip. All of this is fully. described in the patents previously ret'erred to.

The upright member 20 (Fig. l) is connected to the key 15 by a stud 65 which cooperates with an opening 65 formed in the upright member. This opening is elongated to permitthe upright member to move at a velocity varying from that of the stud 65 during the operation of the key 15, and to allow thesegn'ient 25 to remain at rest while the totalizer is disengaging from the segment, previous to the retrogade move ment of said segment.

Freelymounted upon a stud (Slprojech inglatera-lly from the upright member is a roller 68-engaging an inclined edge 69 ot a plate 70 secured to the key 15 by two spacing studs 71. The spacing studs 71. are substantially as long as the thickness of the member 20, thus spacing the plate 70 "from the key a distance eqnalto the thickness of the member 20. In this manner the plate 70 provides a guide for the member 20 and prevents lateral displacement thereof. By depressing the forward end oitthe key 15, the rear end will be elevated to engage the shoulder 21 of the upright member with the rod 22 and operate the pivoted frame 23. As the shoulder engages the rod, the roller 68 will be forced up the forward incline (S9 and thereby increase the velocity of the up right member over that of the key until the roller passes over the peak of the incline when, as the roller travels down the rear in cline edge 72, the velocity of the upright .member will be less than that of the key.

The slowing up of the velocity of the upright member near the end of the depression of the forward end of the key, causes a slower rotation of the totalizer rotating elements so that it these elements complete their movement in the nine position during an operation the velocity of rotation toine astic and the rotating elements in a machine of this type will not cause the trip cam to contact the tripping nose ith suiiicient "force to release the carrying pawl 55 from the shoulder on the trip pawl and overadd on the totalizer.

This form of plate as shown in Fig. l is used principally with the keys of higher order which require practically all of the movement ot the keys and upright member in actuating the registering segment. This plate functions to speed up the travel of the upright member of a higher order key so that may be moved slower later in its upward travel. ,Vi ith. keys of lower order it is not necessary to speed up the movement of the upright member so a plate 73 (Fig. 2) of diiierent term is used on these keys, This plate is so shaped that the roller 68 moves oil? the top of the plate downward upon its rear edge it at the time the shoulder 21 on the upright member engages the rod 22 of the pivoted frame. The rear edge 7% of the plate and the slot 66 are made longer to permit a relatively longer retarding movement of the itipright member.

lt' not necessary to have separate plates attached to the keys to perform this function, for the keys themselves may be formed to obtain the same results, as is shown in Fig. 8. The separate plates as shown in Figs. 1 and 2 illustrate the improvement added to a key of the term generally used in a machine of this type.

l i hile the forms of mechanism herein as shown and described are admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to conline the invention to the forms of embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the claims which follow.

TV hat is claimed is:

1; In a machine of the class described, thecombination of a depressible key, a totalizer having a rotatable element, a totalizer actuator, means operated by said key to engage and drive said actuator, and a connection oetween said key and said last-named means for moving said means at a velocity relatively slower than said hey during the latter partof the depression of said key.

2. In a machine oil the class described, a manipulative pivoted member for entering items on a totalizer, provided with a portion thereon with angular edges inclined in opposite directions to cause the elements operated by said pivoted member to move first faster and then slower than said pivoted member.

3. In a machine of the class described, the combination of a totalizer, an actuator, a differential means for operating the actuator, and manipulative item entering means gether with the lost motion between the key provided with a portion cooperating with the differential means to cause said difi'erential means to move at a difii'erent speed from that of the item entering means.

4. In combination, an item registering key, an upright member for operating a totalizer actuating means, a projection on one of said elements, and a camming surface on the other of said elements cooperating with said projection for moving said upright member at a variable velocity relatively to said item registering key.

5. In a machine of the class described, the combination of a manipulative pivoted member, a rotatable member, pivoted means for operating said rotatable member, an upright member operating said pivoted means, and means rigid with said manipulative pivoted member for moving said upright member at a variable velocity.

6. In a machine of the class described, the combination of a key member, a member adapted to be actuated thereby, oppositely inclined cam edges on one of said members and means on the other member cooperating with said cam edges to transmit movement from the key member to the actuated member.

7. In a machine of the class described, the combination of a key member, a member adapted to be actuated thereby, a plate secured to one member and constituting in connection with said member a guide for the other member, and a cam edge on said plate for transmitting movement from the key member to the actuated member.

In testimony whereof I affix my signature.

EDWARD J. VON PEIN. 

